Does a 5/2+-5/2−ground-state parity doublet exist in?229

1991 ◽  
Vol 44 (5) ◽  
pp. R1728-R1731 ◽  
Author(s):  
V. Grafen ◽  
B. Ackermann ◽  
H. Baltzer ◽  
T. Bihn ◽  
C. Günther ◽  
...  
Keyword(s):  
Ground State ◽  
Parity Doublet

EVIDENCE FOR THE COEXISTENCE OF INTRINSIC REFLECTION ASYMMETRY AND REFLECTION SYMMETRY IN 155Eu AND 153Eu

1990 ◽  
Vol 05 (13) ◽  
pp. 2677-2686 ◽  
Author(s):  
RAYMOND K. SHELINE ◽  
P. C. SOOD
Keyword(s):  
Ground State ◽  
Magnetic Moments ◽  
Neutron Number ◽  
Parity Doublet ◽  
Absolute Value ◽  
Symmetric Spectra ◽  
Splitting Energy ◽  
Reflection Asymmetry ◽  
The One ◽  
The Eu

The inverted odd-even staggering of the differential radii of the Eu isotopes from neutron number 88 through 93, and the Kπ = 5/2± parity doublets with magnetic moments tending towards the hybridized limit and with connecting enhanced El transitions in l55 Eu and 153 Eu suggest the existence of intrinsic reflection asymmetry in the ground state of the Eu isotopes. The average splitting energy between 3 parity doublets in 155 Eu is 63.8 keV, while it is 97.4 keV for the one parity doublet in 153 Eu . Decoupling parameters of the Kπ = 1/2± parity doublet bands in l55 Eu have opposite signs but are approaching the same absolute value as expected for intrinsic reflection asymmetric nuclei. However, the presence of the 3/2 [411] bands with octupole vibrations ~530 keV above also implies the coexistence of reflection symmetric spectra in the low energy regions of both 155 Eu and 153 Eu .

scholarly journals Study of parity-doublet structure in the 147La nucleus

2018 ◽  
Vol 193 ◽  
pp. 05006
Author(s):  
J. Wiśniewski ◽  
W. Urban ◽  
T. Rząca-Urban ◽  
A. G. Smith ◽  
J. F. Smith ◽  
...  
Keyword(s):  
Excited States ◽  
Ground State ◽  
Spontaneous Fission ◽  
Parity Doublet ◽  
Excitation Scheme ◽  
Spin Parity ◽  
Octupole Deformation ◽  
Doublet Structure ◽  
Γ Ray ◽  
Recent Evaluation

The work reports several new excited states in the neutron-rich 147La nucleus, populated in spontaneous fission of 252Cf. The excitation scheme has been reinvestigated by means of γ-ray spectroscopy, using high-fold γ coincidences measured with the Gammasphere array of Ge detectors. It is shown that the 229.65-keV level has spin and parity 11/2-, which changes the 9/2- spin-parity reported in a recent evaluation and sets up the spinparity of the ground state as 5/2+. New levels allow to arrange the excitation scheme of 147La into a parity-doublet-like structure showing that the 147La nucleus may have an octupole deformation.

Renilla Bioluminescence: A Morphologic Approach to the Location of Photocytes

1974 ◽  
Vol 32 ◽  
pp. 208-209
Author(s):  
Ben O. Spurlock ◽  
Milton J. Cormier
Keyword(s):  
Excited State ◽  
Ground State ◽  
Molecular Basis ◽  
Light Emission ◽  
Chemical Basis ◽  
Electronic Excited State ◽  
Colonial Form ◽  
The Common ◽  
Eighteenth And Nineteenth Centuries ◽  
Catalyzed Oxidation

The phenomenon of bioluminescence has fascinated layman and scientist alike for many centuries. During the eighteenth and nineteenth centuries a number of observations were reported on the physiology of bioluminescence in Renilla, the common sea pansy. More recently biochemists have directed their attention to the molecular basis of luminosity in this colonial form. These studies have centered primarily on defining the chemical basis for bioluminescence and its control. It is now established that bioluminescence in Renilla arises due to the luciferase-catalyzed oxidation of luciferin. This results in the creation of a product (oxyluciferin) in an electronic excited state. The transition of oxyluciferin from its excited state to the ground state leads to light emission.

The ground state energy of the ±J spin glass from the genetic algorithm

1994 ◽  
Vol 4 (9) ◽  
pp. 1281-1285 ◽  
Author(s):  
P. Sutton ◽  
D. L. Hunter ◽  
N. Jan
Keyword(s):  
Genetic Algorithm ◽  
Spin Glass ◽  
Ground State Energy ◽  
Ground State ◽  
State Energy

Ground State and Excited State H-Atom Temperatures in a Microwave Plasma Diamond Deposition Reactor

1996 ◽  
Vol 6 (9) ◽  
pp. 1167-1180 ◽  
Author(s):  
A. Gicquel ◽  
M. Chenevier ◽  
Y. Breton ◽  
M. Petiau ◽  
J. P. Booth ◽  
...  
Keyword(s):  
Excited State ◽  
Ground State ◽  
Microwave Plasma ◽  
Diamond Deposition
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